Results 41 to 50 of about 1,787,106 (304)
Optimal thermodynamic control in open quantum systems [PDF]
, 2018 We apply advanced methods of control theory to open quantum systems and we determine finite-time processes which are optimal with respect to thermodynamic performances.
Carlini, Alberto +3 more
core +2 more sources
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
A wideband 0.9–2.4 GHz 25 W high‐efficiency Gallium Nitride radio frequency power amplifier
Engineering Reports, 2021 In this work, a 0.9–2.4 GHz, 25 W output power, radio frequency (RF) power amplifier based on Class‐E switchmode topology has been analyzed. A load‐pull simulation method is used to optimize the power performance in the operating band.
Tanghid B. Rashid, Heather Song
doaj +1 more source
High efficiency, low offset voltage InGaP/GaAs power heterostructure-emitter bipolar transistors with advanced thermal management [PDF]
, 2003 High efficiency, low offset voltage InGaP/GaAs power heterostructure-emitter bipolar transistors (HEBTs) have been demonstrated. The large signal performance of the HEBTs is characterized. Output power of 0.25 W with power added efficiency (PAE) of 63.5%
Hsu, CC +4 more
core +1 more source
Organoids in pediatric cancer research
FEBS Letters, EarlyView.Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley +1 more source
Design of a Doherty Power Amplifier for GSM Systems
Tikrit Journal of Engineering Sciences, 2011 This paper presents the design and analysis of Doherty power amplifier. The Doherty amplifier is used in a base station for mobile system because of its high efficiency.
Saad Wasmi Osman Luhaib
doaj +1 more source
Filtering Power Amplifier With Up to 4th Harmonic Suppression
IEEE Access, 2020 Unlike conventional conception that power amplifier and filter are regarded as two separate components and designed separately, this paper presents a high efficiency power amplifier with filtering capability, which is called filtering power amplifier ...
Xiaobo Qi, Fei Xiao
doaj +1 more source
GaN HEMT PA with over 84% power added efficiency
Electronics Letters, 2010 Described are the design procedure and measured performance of a PA targeted for the W-CDMA downlink band exhibiting over 84% PAE at 2.14%GHz. The PA is designed with an uncharacterised GaN HEMT. A measurement-based design approach is used to optimise the source and load impedance at the fundamental frequency with class-F -1 harmonic terminations ...
M. Roberg, J. Hoversten, Z. Popović
openaire +1 more source
FEBS Letters, EarlyView.Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho +3 more
wiley +1 more source
Chemical Engineering Transactions, 2021 Regeneration is a widely implemented method in a thermal power plant for increasing the power plant efficiency. In a typical regenerative method, extracted steam from a steam turbine is mixed with cooling water in an open feed water heater to increase ...
Somchart Chantasiriwan
doaj +1 more source